根据统计数据生成柱状统计图

package org.pic.griph; import java.io.*; import com.sun.image.codec.jpeg.*; import java.awt.image.*; import java.awt.*; public class ChartGraphics { BufferedImage image; public void createImage(String fileLocation) { try { FileOutputStream fos = new FileOutputStream(fileLocation); BufferedOutputStream bos = new BufferedOutputStream(fos); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); encoder.encode(image); bos.close(); } catch (Exception e) { System.out.println(e); } } public void graphicsGeneration(int h1, int h2, int h3, int h4, int h5) { final int X = 10; int imageWidth = 300;// ͼƬ�Ŀ�� int imageHeight = 300;// ͼƬ�ĸ߶� int columnWidth = 30;// ��Ŀ�� int columnHeight = 200;// ������߶� ChartGraphics chartGraphics = new ChartGraphics(); chartGraphics.image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics graphics = chartGraphics.image.getGraphics(); graphics.setColor(Color.white); graphics.fillRect(0, 0, imageWidth, imageHeight); graphics.setColor(Color.blue); graphics.fill3DRect(X + 1 * columnWidth, columnHeight - h1, columnWidth,h1,true); graphics.setColor(Color.red); graphics.fill3DRect(X + 2 * columnWidth, columnHeight - h2, columnWidth, h2,true); graphics.setColor(Color.yellow); graphics.fill3DRect(X + 3 * columnWidth, columnHeight - h3, columnWidth, h3,true); graphics.setColor(Color.green); graphics.fill3DRect(X + 4 * columnWidth, columnHeight - h4, columnWidth, h4,true); graphics.setColor(Color.orange); graphics.fill3DRect(X + 5 * columnWidth, columnHeight - h5, columnWidth, h5,true); graphics.setColor(Color.cyan); chartGraphics.createImage("E:\\MyEclipse\\apache-tomcat-6.0.14\\webapps\\pic\\chart.jpg"); } }